Gem Falls vs Sudoku Sagax
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Gem Falls
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Match three or more, watch the cascade take the rest, and keep going. Gemfall is an endless match-3 built for picking up and putting down. Every level asks for something different. Clear a colour, break through the ice, bring the cargo home. And when you close the app mid-run, the board, the score and your powerups are waiting exactly as you left them. No timer running against your day, no lives to wait for, no move you have to make right now. FOURTEEN WORLDS Every level is set somewhere, and where never changes: level two is a Maya temple in the jungle, level four is a dead valley under an erupting volcano, and they will be next time too. A wreck on the sea floor. A sweet factory. A frozen kingdom, a haunted mansion, a marble gate in the clouds, a garden at sunset, a gorge full of waterfalls, a toy box at the end of the afternoon, a fjord under the northern lights. Each world has its own six pieces, its own board, and its own weather in the air above it. CLASSIC Endless levels, each with its own objective. Chain your matches to build heat, and every gem on the board is worth more while it lasts. Clear the level, fall through the warp, and the next one asks a little more of you. TIME ATTACK Sixty seconds. Every match buys you a few more. See how far you can stretch the clock. POWER GEMS Four in a row makes a gem that clears a whole line. An L or a T makes one that blows a hole in the board. Five in a row makes the star. The rarest piece in the game and worth waiting for. Put two power gems together and the board comes apart. ICE, STONE AND CARGO Later levels do not just hand you the board. Ice freezes gems in place until you break the shell. Stone blocks take repeated knocks. Cargo has to be walked all the way to the bottom before it counts. FAIR BY DESIGN · Free. No in-app purchases, no subscriptions, no ads. Nothing is locked behind a paywall, because there is no paywall. · Fully playable offline. · Nothing is collected. No analytics, no tracking, no account, no sign-up. Your run lives on your phone and nowhere else. · The six gems differ in shape as well as in colour, so they stay apart if you do not see colour the way most people do. GAME CENTER Sign in to Game Center and your best Classic and Time Attack scores go on Apple's global leaderboards. Skip it and the game plays exactly the same, minus a rank. Gemfall is built from scratch in Swift for iPhone, rebuilt from the browser game of the same name. iPhone, portrait, iOS 18 or later.
Sudoku Sagax
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Sudoku Sagax is Sudoku with real progression: solve levels, collect points and stars, climb through 19 fox ranks and take on everyone else in the daily challenge. Nona the vixen shows you around and explains every new puzzle type in half a minute. ELEVEN PUZZLE TYPES • Sudoku in four difficulties, from Easy to Extreme • Killer Sudoku, Kakuro, Nonogram, Crowns, Binary puzzle • X-Sudoku, Jigsaw Sudoku, Mini 6x6 and the big 16x16 • Foxhold: Sudoku as tower defence, our very own game Every type has its own levels, its own best times and its own leaderboard. DIFFICULTY BY TECHNIQUE In classic Sudoku, difficulty follows the techniques a puzzle calls for, not the number of givens: Easy needs singles, Extreme asks for X-Wing and XY-Wing. In the game you see which technique is needed, and after a win, what you solved it with. Every level of every puzzle type can be solved without guessing, with logic alone. DAILY CHALLENGE AND STREAKS One puzzle a day, the same for everyone, with its own daily leaderboard. Solve on consecutive days and your streak grows. Streak shields cover a missed day, so a busy calendar does not undo weeks of work. RANKS, STARS, ACHIEVEMENTS Every solved level counts towards your rank: 19 tiers from Fox Cub to Sagax Immortalis, each with its own fox portrait as a profile picture. Add up to three stars per level and 39 achievements. DUELS AGAINST FRIENDS After a win, challenge someone with a link: they play exactly the same puzzle against your time. No account needed on their side. THOUGHT THROUGH IN DETAIL • A tip that shows you the next technique instead of giving away the digit, plus notes, eraser and undo • Mistakes shown instantly or only at the end, your choice • Digit-first mode for fast entry • Light and dark themes, in ten languages • Puzzles are generated locally, so a dead spot will not stop you You can start playing without an account. With a free account (sign in with Google or Apple), your progress, streak and leaderboard position follow you across devices, including between app and browser. Sudoku Sagax is free, with no ads and no in-app purchases. The den is open. How far will you get?
Screenshots
Verdict
The clearest difference is update cadence: Sudoku Sagax at every 2 days against Gem Falls's weekly. Sudoku Sagax also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Gem Falls ships an update weekly, Sudoku Sagax every 2 days. The most recent releases landed on October 29, 2026 and November 6, 2026 respectively.
| Parameter | Gem Falls | Sudoku Sagax |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 51 MB | 17 MB |
| Age rating | 4+ | 12+ |
| Developer | Sandrino Kelders | Vulpes Sagax UG (haftungsbeschränkt) |
In-app purchases
Gem Falls
No in-app purchases
Sudoku Sagax
No in-app purchases









